Stadium: Estadio Puerto Vallarta Round: 25 Ground: Hardcourt outdoor
| ITF USA F12 | 2018/04/22 17:00 | Marcelo Sepulveda v Julian Bradley | 6-7,7-6,3-6 |
| ITF USA F12 | 2018/04/20 12:00 | Marcelo Sepulveda v Yang Liu | 6-2,6-2 |
| ITF USA F11 | 2018/04/16 14:00 | Christopher G Haworth v Marcelo Sepulveda | 4-6,6-1,6-4 |
| ITF USA F11 | 2018/04/15 12:00 | Charles Sullivan v Marcelo Sepulveda | 2-6,3-6 |
| ITF USA F10 Qual | 2018/04/08 17:30 | Alexander Ritschard v Marcelo Sepulveda | 6-3,6-0 |
| ITF USA F3 Qual | 2018/01/07 16:00 | Trent Bryde v Marcelo Sepulveda | 6-4,7-5 |
| ITF USA F3 Qual | 2018/01/06 16:00 | Marcelo Sepulveda v Malik Bhatnagar | 4-6,6-4,7-6 |
| Challenger Monterrey Qual | 2017/09/30 18:30 | Eduardo Dischinger v Marcelo Sepulveda | 7-6,6-1 |
| Challenger Mexico City | 2018/04/10 17:00 | Santiago Giraldo v Mats Moraing | 4-6,7-5,2-6 |
| Davis Cup | 2018/04/06 20:00 | Santiago Giraldo v Thiago Monteiro | 1-6,2-6 |
| Challenger Le Gosier | 2018/03/27 19:30 | Santiago Giraldo v Ante Pavic | 2-6,6-3,6-7 |
| ATP Miami Qual | 2018/03/19 19:10 | Santiago Giraldo v Elias Ymer | 6-7,4-6 |
| Davis Cup | 2017/09/17 15:00 | Santiago Giraldo v Marin Cilic | 3-6,4-6,4-6 |
| Davis Cup | 2017/09/15 17:10 | Santiago Giraldo v Franko Skugor | 6-4,4-6,5-7,6-4,6-2 |
| US Open | 2017/08/30 19:45 | Vincent Millot v Santiago Giraldo | 1-6,0-6,6-4,6-4,4-6 |
| Challenger Santo Domingo | 2017/08/16 02:15 | Nick Hardt v Santiago Giraldo | 1-6,0-6 |